Monkey-wrench



' (No Model.)

J. L. WHITEHEAD; MONKEY WRENCH.

No. 598,588. Patented Feb. 8, 1898.

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JOHN L. VVHITEHEAD, OF WILLIAMSBURG, KENTUCKY.

MONKEY=WRENCH.

SPECIFICATION forming part of Letters Patent No. 598,588, dated February8, 1898.

Application filed June 8,1897. Serial No. 639,877. (No model.)

T0 0; whom it may concern:

Be it known that I, JOHN L. WHITEHEAD, a citizen of the United States,residing at Williamsburg, in the county of Whitley and State ofKentucky, have invented certain new and useful Improvements inMonkey-Wrenches; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to an improved monkey-wrench; and the object is toprovide a simple, effective, and durable tool of this class.

To this end the noveltyconsists in the construction, combination, andarrangement of the same, as will be hereinafter more fully described,and particularly pointed out in the claims.

In the accompanying drawings the same reference characters indicate thesame parts of the invention.

Figure 1 is a side elevation of my improved monkey-wrench, and Fig. 2 isa front view of the same.

1 represents the rectangular shank of the wrench, 2 the handle, and 3the usual solid head. The shank is provided with rack-teeth 4:. Amovable jaw 5 snuglyencompasses said shank, so as to slide freelythereon, and it is formed with a transverse orifice 6, in the parallelwalls 7 7 of which is journaled a shaft 8, on which is pivoted a pinion9, meshing with the rack-teeth 4 on the shank. A rectangular frame 10 ispivoted at its inner end to said shaft 8, and its outer end is formedwith a handle 11, arrangedto swing clear of the lower end of the movablejaw 5. In this rectangular frame is pivoted a second pinion 12, which isalways in mesh with the pinion 9, and when the frame is in the positionshown by the dotted lines it will be seen that the jaw 5 can be freelyadj usted along the shank; but when the frame is in the position shownin full lines the pinion 9 looks the movable jaw 5 to the shank throughthe meshing of the pinion 12 with the teeth 4: on said shank.

13 represents a retaining-spring fixed to the outer end of the slidingjaw 5, and it is adapted to bear with sufficient force against the innersurface of the end of the handle 11 to hold the frame 10 in-either alocked or unlocked position.

By referring to Fig. 1 it will be seen that the free end of the spring13 bears against the handle 11, as shown by the full lines, withsufficient frictional force to retain the pinion 12 in mesh with therack4, and when said handle 11 is thrown outwardly from the shank 1 it isforced over the convex, portion of the spring, which retains it on theopposite side, as shown by dotted lines in Fig. 1.

Although I have specifically described the construction and relativearrangement of the several elements of my invention, I do not desire tobe confined to the same, as such changes or modifications may be made asclearly fall within the scope of my invention without departing from thespirit thereof.

Having thus fully described my invention, what I claim as new anduseful, and desire to secure by Letters Patent of the United States, is-

1. A monkey-wrench comprising the shank 1, head 3, and the teeth 1formed integral with said shank, in combination with the movable jaw 5,encompassing said shank, the transverse shaft.8 pivoted in said movablejaw, the pinion 9, mounted on said shaft and meshing with the teeth insaid shank, a rectangular frame pivoted on said shaft 8, the pinion 12,pivoted in said frame so as to mesh with the pinion 9, and meanssubstantially as described for engaging said pinion 12 with the teeth 4on the shank 1, substantially as shown and described. 1 r

2. A monkey-wrench comprising the shank 1, provided with the integralhead 3 and teeth 4, in combination with the sliding jaw 5 encompassingsaid shank, the transverse shaft 8 pivoted in said sliding jaw, thepinion 9 mounted on said shaft and in mesh with the teeth 4:, the frame10 pivoted on said shaft, the pinion 12 jonrnaled in said frame so as tomesh with the pinion 9, and means substantially as described for holdingsaid pinion 12 in or out of engagement with the teeth 4 on the shank 1,substantially as shown and described.

In testimony whereof I hereunto affiX my signature in presence of twowitnesses.

JOHN L. WHITEHEAD.

Witnesses:

J As. K. WATKINS, BEN WArKINs.

